Orbit Fit and Astrometric record for 13TD187

The following information shows the result of the orbit fit based on Gary Bernstein's method. Most of the information should be self-explanatory. Take special note that while the original Bernstein software works with barycentric coordinates, we convert these results into a heliocentric coordinate system.

# Object: 13TD187   
# Created Sat Dec  4 02:12:07 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     35 observations of     35
# Arc:   5.23y
# First observation: 2013/09/02
#  Last observation: 2018/11/27
# Chi-squared of fit:    11.75 DOF:     64 RMS:  0.10
# Min/Max residuals:    -0.28    0.30
# Exact a, adot, b, bdot, g, gdot:
  1.960226E-05  2.970347E-02 -1.323152E-06 -2.474083E-03  2.586173E-02  4.241919E-03
# Covariance matrix:
  2.0992E-13 -6.2033E-14 -1.6911E-15  2.3770E-15  1.1448E-13 -2.2582E-13
 -6.2033E-14  1.7379E-13  6.6871E-15 -1.5098E-14  7.0240E-14  1.4104E-12
 -1.6911E-15  6.6871E-15  1.0578E-13 -3.1312E-14  2.4736E-15  5.9196E-14
  2.3770E-15 -1.5098E-14 -3.1312E-14  1.6438E-14 -7.4679E-15 -1.3442E-13
  1.1448E-13  7.0240E-14  2.4736E-15 -7.4679E-15  1.9877E-13  6.9269E-13
 -2.2582E-13  1.4104E-12  5.9196E-14 -1.3442E-13  6.9269E-13  1.2555E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.695332    5.721072    0.443968   -0.042580   -0.906280  2456537.774988
# Heliocentric elements and errors
Epoch:              2456538.5000  =  2013/09/03
Mean Anomaly:           11.63388 +/-     0.008
Argument of Peri:      181.63313 +/-     0.021
Long of Asc Node:      156.37464 +/-     0.001
Inclination:             5.46971 +/-     0.000
Eccentricity:         0.37691584 +/-    0.0001
Semi-Major Axis:     61.59559415 +/-    0.0084
Time of Perihelion: 2450832.3286 +/-       4.2
Perihelion:          38.37923877 +/-    0.0081
Aphelion:            84.81194953 +/-    0.0131
Period (y)              483.4290 +/-      0.10
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           39.37870919 +/-    0.0007
Ecliptic Y            3.50222073 +/-    0.0001
Ecliptic Z           -1.81838752 +/-    0.0000
Ecliptic XDOT         0.00011443 +/-    0.0000
Ecliptic YDOT         0.00317129 +/-    0.0000
Ecliptic ZDOT        -0.00028261 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.57584672 +/-    0.0007
Geocenter to KBO     38.66711212 +/-    0.0007
# Hcoef:  7.39

The following table shows the complete astrometric record for 13TD187. The first three columns show the date of observation. The next six columns are RA and DEC. The next column (when provided) is the observed magnitude and filter. The next column is the object name (13TD187) followed by the observatory code and reference code for the source of the astrometry.

2013 09  02.27421  00 25 16.573  -00 12 09.32  24.5g 13TD187   W84  C~4yRC      
2013 09  09.21447  00 24 48.332  -00 15 34.41  23.8g 13TD187   W84  C~4yRC      
2013 10  03.08934  00 23 02.018  -00 27 50.58  23.6g 13TD187   W84  C~4yRC      
2013 10  13.08917  00 22 17.223  -00 32 47.49  22.8z 13TD187   W84  C~4yRC      
2013 10  13.08917  00 22 17.22   -00 32 47.4   23.1z 13TD187   W84  C~3clP      
2013 10  13.11349  00 22 17.109  -00 32 48.08  22.8i 13TD187   W84  C~4yRC      
2013 10  13.11349  00 22 17.11   -00 32 48.1   22.9i 13TD187   W84  C~3clP      
2013 11  23.09694  00 19 56.048  -00 47 11.83  23.3r 13TD187   W84  C~4yRC      
2013 11  23.09694  00 19 56.05   -00 47 11.8   23.2r 13TD187   W84  C~3clP      
2013 11  23.09831  00 19 56.040  -00 47 11.72  23.1i 13TD187   W84  C~4yRC      
2013 11  23.09831  00 19 56.04   -00 47 11.7   23.1i 13TD187   W84  C~3clP      
2014 08  18.30926  00 32 35.534  +00 26 57.26  23.3z 13TD187   W84  C~4yRC      
2014 10  28.20852  00 27 42.619  -00 06 52.14  24.0g 13TD187   W84  C~4yRC      
2014 11  13.06664  00 26 47.281  -00 12 26.09  23.2r 13TD187   W84  C~4yRC      
2014 11  13.06664  00 26 47.28   -00 12 26.1   23.2r 13TD187   W84  C~3clP      
2014 11  13.06801  00 26 47.278  -00 12 26.07  22.9i 13TD187   W84  C~4yRC      
2014 11  13.06801  00 26 47.28   -00 12 26.1   22.9i 13TD187   W84  C~3clP      
2014 11  15.15632  00 26 41.125  -00 13 01.28  22.3z 13TD187   W84  C~4yRC      
2016 09  08.33033  00 44 01.963  +01 21 12.76  23.0i 13TD187   W84  C~4yRC      
2016 09  08.33033  00 44 01.96   +01 21 12.8   23.5i 13TD187   W84  C~3clP      
2016 09  08.33171  00 44 01.955  +01 21 12.57  23.5r 13TD187   W84  C~4yRC      
2016 09  08.33171  00 44 01.95   +01 21 12.6   23.7r 13TD187   W84  C~3clP      
2016 11  06.18215  00 39 50.535  +00 53 34.53  23.3i 13TD187   W84  C~4yRC      
2016 11  06.18215  00 39 50.53   +00 53 34.5   23.2i 13TD187   W84  C~3clP      
2016 11  18.11448  00 39 11.869  +00 49 52.62  23.5i 13TD187   W84  C~4yRC      
2016 11  25.06213  00 38 53.848  +00 48 16.22  23.8r 13TD187   W84  C~4yRC      
2016 11  25.06213  00 38 53.85   +00 48 16.2   23.8r 13TD187   W84  C~3clP      
2017 08  22.32872  00 51 17.701  +02 00 09.64  23.4i 13TD187   W84  C~4yRC      
2017 08  22.33009  00 51 17.690  +02 00 09.39  23.5r 13TD187   W84  C~4yRC      
2017 08  22.33147  00 51 17.697  +02 00 09.57  24.4g 13TD187   W84  C~4yRC      
2017 09  27.22401  00 49 00.109  +01 43 28.67  22.8r 13TD187   W84  C~4yRC      
2017 09  27.22538  00 49 00.105  +01 43 28.73  23.3i 13TD187   W84  C~4yRC      
2017 09  27.22675  00 49 00.087  +01 43 28.60  23.8g 13TD187   W84  C~4yRC      
2018 11  08.18235  00 52 15.293  +01 55 47.03  23.4r 13TD187   W84  C~4yRC      
2018 11  27.08028  00 51 16.436  +01 50 23.97  23.9g 13TD187   W84  C~4yRC      

The following table shows the residuals to the orbit fit. The first coumn is the point number. The second column is the time, in years, measured from the first observation. The third and fifth columns are the regularized positions used in the orbit fit. The fourth and sixth columns are the residuals, in arc seconds, for RA and Dec respectively.

     1   0.0000      0.00    -0.26       0.00    -0.15
     2   0.0190      0.00     0.19       0.00     0.08
     3   0.0844      0.00    -0.05       0.00     0.30
     4   0.1117      0.00     0.08       0.00    -0.11
     5   0.1117      0.00     0.04       0.00    -0.02
     6   0.1118      0.00     0.01       0.00    -0.02
     7   0.1118      0.00    -0.00       0.00    -0.00
     8   0.2240      0.00     0.08       0.00    -0.13
     9   0.2240      0.00     0.11       0.00    -0.10
    10   0.2240      0.00     0.00       0.00     0.02
    11   0.2240      0.00     0.00       0.00    -0.00
    12   0.9583      0.00     0.05       0.00    -0.08
    13   1.1525      0.00    -0.22       0.00     0.09
    14   1.1959      0.00    -0.00       0.00     0.00
    15   1.1959      0.00     0.01       0.00     0.01
    16   1.1959      0.00     0.06       0.00     0.03
    17   1.1959      0.00     0.03       0.00     0.06
    18   1.2016      0.00    -0.28       0.00     0.06
    19   3.0173      0.00     0.12       0.00     0.09
    20   3.0173      0.00     0.16       0.00     0.05
    21   3.0173      0.00     0.05       0.00    -0.07
    22   3.0173      0.00     0.12       0.00    -0.10
    23   3.1784      0.00    -0.05       0.00     0.01
    24   3.1784      0.00     0.02       0.00     0.04
    25   3.2111      0.00     0.02       0.00     0.12
    26   3.2301      0.00     0.08       0.00    -0.04
    27   3.2301      0.00     0.05       0.00    -0.02
    28   3.9700      0.00     0.00       0.00     0.15
    29   3.9700      0.00    -0.10       0.00    -0.07
    30   3.9700      0.00     0.07       0.00     0.15
    31   4.0683      0.00    -0.08       0.00    -0.11
    32   4.0683      0.00    -0.05       0.00    -0.01
    33   4.0683      0.00    -0.22       0.00    -0.10
    34   5.1825      0.00    -0.00       0.00    -0.02
    35   5.2342      0.00     0.13       0.00    -0.03

The following table comes from a 10My integration of the orbit of the object. Three columns are shown. The first column is the result of integrating the nominal orbit. The other two columns are based on clones of the nominal orbit that are +/- 3 sigma from the nominal orbit. If all three types agree then the classificiation is deemed secure. The basis for these calculations is described in more detail in AJ, 129, 1117 (2005). Any use made of these calculations should refer to and credit this publication and the Deep Ecliptic Survey Team.

13TD187    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        62.190    62.190    62.190
ecceobj         0.383     0.383     0.383
incobj          5.457     5.457     5.457
qmin           37.635    37.622    37.638
qmax           86.887    86.890    86.886
amean          61.609    61.610    61.602
amin           60.886    60.888    60.901
amax           62.574    62.584    62.573
emean           0.377     0.377     0.377
emin            0.368     0.367     0.367
emax            0.389     0.389     0.389
imean           4.587     4.588     4.588
imin            4.271     4.267     4.271
imax            4.940     4.936     4.939
excite_mean     0.386     0.386     0.386
fracstop        1.000     1.000     1.000
cjmean          3.129     3.129     3.129

libcent 0      -180.0    -180.0    -180.0
libamp  0      -180.0    -180.0    -180.0
libcent 1      -180.0    -180.0    -180.0
libamp  1      -180.0    -180.0    -180.0
libcent 2      -180.0    -180.0    -180.0
libamp  2      -180.0    -180.0    -180.0
libcent 3      -180.0    -180.0    -180.0
libamp  3      -180.0    -180.0    -180.0
libcent 4      -180.0    -180.0    -180.0
libamp  4      -180.0    -180.0    -180.0

kozaimean       190.3     190.3     190.3
kozaiamp        180.0     180.0     180.0